Gaya APA

Geological, B, F, G, U, R, H, A, T, N, I, O. (1971). Groundwater in The Sperkhios Basin . : .

Gaya MLA

Geological, Bundensanstalt, Fur, Geowissenschaften, Und, Rohstoffe, Hannover, And, The, National, Institute, Of. "Groundwater in The Sperkhios Basin". : , 1971. Map.